<template>
  <teleport to="#back">
    <div
      class="d-flex justify-content-center align-items-cneter h-100 w-100 loading-container"
    >
      <div class="loading-content">
        <div class="spinner-border text-primary" role="status">
          <span class="visually-hidden">{{ text || 'Loading' }}</span>
        </div>
        <p class="text-primary small">{{ text }}</p>
      </div>
    </div>
  </teleport>
</template>

<script lang="ts">
import { defineComponent, onUnmounted } from "vue";
export default defineComponent({
    name:'loaderIng',
    props:{
        text: {
            type:String
        }
    },
    setup() {
        //创建需要的节点
        const node = document.createElement('div')
        node.id = 'back'
        document.body.appendChild(node)
        //每跳一次页面，就会创建一个 back 节点
        onUnmounted(() => {
            document.body.removeChild(node)
        })
        return {}
    }
})

</script>

<style>
.loading-container {
  background: rgba(255, 255, 255, 0.5);
  z-index: 100;
  position: fixed;
  top:0;
  left:0;
}
.loading-content {
    text-align: center;
}
</style>
